Improvement in time-globes



L. P. JUVET. Time-Globe.

Reissued April 8,1879.

1' '3 Sheets-Shaet 2. I

Time- Reissued April 8,1879.

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HOGRAPMHQ WASNINGTON D C UNITED STATES To all whom it may concern:

Be it known that I, Lonrs PAUL JUvET, of Glens Falls, in the county of Warren and St-ate of New York, have invented certain new and useful Improvements in Time-Globes; and I do hereby declare the following to be a 'full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon.

Previous to my invention time-globes have been made with the clock-Work adapted to rotate the globe arranged, in some cases, exterior to, and in other cases wholly within, the said globe, and with an equatorial dial supported by and within the meridian-ring, in which latter was mounted, in suitable bearings, the polar shaft'or axis supporting the globe; and in some such prior contrivances there has been provided, in addition to the equatorial dial, a smaller dial, located on or in the surface of the globe, and arranged concentrically with the axis of motion of the latter, so that, by means of a pointer attached to in close proximity to the equatorial dial, and a stationary pointer attached to the meridianring at the axis of rotation of the globe and arranged in close proximity to the moving dial located 011 the surface of said globe, two concentric dials were presented for the observation of time. But in none of such prior con.- trivances, so far as I know, were two dials employed in any manner that rendered the ap paratus capable of indicating both the true and mean time at places of different lon gitudes. My invention has for one of its objects to provide a time-globe which shall embrace the capacity just alluded to, and has for a further object the production of such a contrivance in a form simple and economic of manufacture and desirable in its practical operations.

To these ends and objects my invention consists, first, in the use, in connection with the globe and its equatorial dial, of a supplemental stationary dial, arranged concentrically to the equatorial-dial, and provided with suitable hands moved by clock-work, so that by means of these devices not only-the true time at vaof the globe in a horizontal position.

the globe at its equatorial circle and moving PATENT OFFICE.

IMPROVEMENT IN TlME-GLOBES.

Specification forming part of Letters Patent No. 64,989, dated May 21, 1867 Reissue No. 8,666, dated April 8, 1879 application filed March 6, 1879.

rious places on the surface of the globe, but also the mean or clock time at the place of use of the apparatus, may be readily observed;

second, in a novel construction of theshaft or in which-- Figure 1 is a side elevation of a time-globe embracing the several features of my invention. Fig. 2 is a front view of the same, with the meridian-ring adjusted to bring the axis Fig. 3 is an axial section, showing the clock-work of the globe; and Fig. 4 is a detail view of aregulator attachment.

.In the several figures the same part will be found designated by the same letter.

A represents a hollow terrestrial globe composed of two hemispherical sections properly fitted and secured together at the equatorial line, as will be presently more fully described. B is the equatorial dial, and G is the meridian-ring which supports it, and also supports the axial shaft of theglobe and a supplemental dial, D, arranged near one of the poles and concentrically to the equatorial dial B.

The meridian-ring O is arranged, as usual, to slide in the upper part of the standard E, in which it is secured in the ordinary manner by aset-screw, a and said ring has its surface marked off into degrees in a well-known manner, to facilitate, by adjustment of said ring in said standard E, the placement of the globe with its axis at any desired degree of inclination to the horizon.

b and d are, respectively, the minute and hour hands of the supplemental dial D, and are operated by clock-work arranged or located,

by preference, within the globe A, said hands indicating the time on dial D the same as on have, by preference, shown the dial D located at the North Pole, the hands I) and d are arranged to move to the left.

I have shown the dial D as marked or numbered from one to twelve twice, since the globe revolves once in twenty-four hours; but said dial D may be subdivided into twelve hours only instead of twenty-four, at the option of the constructer.

F F represent the axial shaft of the globe. G is a thumb-piece attached to the lower end of the portion F, by which to turn the part F, to effect the winding up of the chronometer inside of the globe.

The compound axis or shaft F F of the globe is supported by the meridian-ring 0, through the medium of two axial boxes, 6 e, as clearly shown.

The lines f on the globe indicate the parallels of longitude, and the lines marked 9 those of latitude.

The works employed in the construction of my timeglobe, as seen in Fig. 3, are composed of two plates, h h, united by pillars a Between the plates and centrally located is the barrel-wheel H, containing the mainsprin g b, which imparts motion to the train of wheels and pinions, said motion being regulated by a "patent-lever or any other escapement adapted to operate with the works in difl'erent positions. i

The arbor F of the barrel-wheel is made of suitable length to extend through the plate h, and also through the meridian-rm g G, and receive at its outer end the thumb-piece G, by means of which the mainspring b may be wound up from without the globe without either detaching the sections of the latter or the employment of a separate key-L The ratchet-wheel n is secured to the arbor below the plate h.

.Upon the plate h and coincident with the barrel wheel arbor is secured by screws the flanged end 0 of the arbor F. This arbor is also secured by screws, or otherwise, to the meridian-circle G, thus rendering the works of the chronometer stationary relatively to the globe. Onand around this arbor F are two wheels, 6 and j, receiving their -motions from the double wheel k, and these are so calculated as to make the wheel j revolve once in two hours, being the one hundred and twenty minutes of the dial D, and the wheel t one revolution in twenty-four hours, their respective motions being transmitted by prolongations of their arbors p 0 to the globe A and the two hands b and (Z of the dial D, the said hands being secured by hard friction to the upper ends of their respective arbors. A slight alteration in the number of teeth of these wheels would, of course, be necessary in case of mak ing the dial D with twelve instead of twentyfour hours. The two hemispherical sections of the globe A are of equal weight, to render the rotative motion of the globe regular, and these sections are connected by means of an inside band, Z, secured to one of them, and

over which the other is placed and held in position by meansof four (more or less) small screws.

A hole is made in the globe at one of its poles of a size proper for the accommodation of the portion F of the axial shaft, upon which the said globe revolves, while at the other pole of the globe is an aperture, within which fits and is secured the end of the arbor o of daily-wheel t, which imparts the necessary motion to the globe. The end of this arbor o and the hole in the globe within which it is fitted should be made square, or such other form as will insure the rotation of the globe by the arbor. The globe is prevented from sliding on the axial shaft by means of two rings, on m, placed, as shown, one within and one without the globe on F, and secured to the latter by set-screws.

.Having thus described the different parts of the machine,'I will now proceed to explain its operation.

Supposing the globeto be stationary, by

turning the thumb-piece G, attachedto arbor F, the mainspring b is wound up and motion is imparted to the works, and through the ar bor 0 of daily-Wheel 'i to the globe, this arbor carrying the hounhand, which indicates the hour on dial D, while the minute-hand on the arbor 12 indicates the minutes on the same dial. The globe is thus revolved diurnally by the arbor 0.

earth on its axis, causing the vicissitude of day and night, and shows the true time's respectively of places located on diflerent meridians, but also, by means of the additional dial D, renders the services of a common clock.

If it be desirable to attach a regulatoroperating from the outside of the clock, this can be easily done, as illustrated at Fig. 4, and is effected by placing a sleeve, q, concentric to the arbor F, at one end of which is a toothed sector, 1", which engages with another, 8, adjusted on the balanced-wh eel bridge, and bearing the pins which control the hair spring.

It will be seen that by turning the sleeve q the tooth-sector 1' will impart motion to the regulating-sectors to producev the desired effect.

Having thus described the construction and operation of my improved time-globe, what I claim therein as new, and desire to secure by Letters Patent, is-- 1. The combination, with a globe rotated in any suitable manner and a stationary equatorial dial, of a, supplemental stationary dial In testimony whereof I have hereunto set provided with suitable hands substantially as my hand and seal this 28th day of February, and for the'pnrposes described. 187 9.

2. In oornbinationwith the globe, an axial shaft made in two parts, F and F, the former L. P. J UVET. [11,. s.] serving as an axis for the hollow arbors 0 and p, which carry the globe and the hands dand In presence ofb, and the letter serving as a, winding-arbor, A. R. CARPENTER, all substantially as set forth. JOHN E. PARRY. 

